Annual annual % growth
1971 12.510647038581467
1972 -10.22367983988579
1973 24.664773955730368
1974 6.103110549573259
1975 30.180846726908015
1976 60.7071946503639
1977 -23.149437079007527
1978 -34.84882734368256
1979 -52.850724388769564
1980 204.31714409224202
1981 40.908748867101906
1982 1.413903410805247
1983 -8.338752986723051
1984 -5.250463068612433
1985 -18.46703642694834
1986 -20.59083629926603
1987 -28.37604116879639
1988 33.369579721736926
1989 -14.976567593918617
1990 -15.502229228865033
1991 23.683267054199703
1992 -19.971085766503165
1993 -18.71090981297992
1994 22.322801140210856
1995 -7.434652716537016
1996 10.69579781886101
1997 4.826754824995973
1998 7.288995418343177
1999 -4.7661561126907515
2000 -20.07326496658557
2001 23.93860539078709
2002 8.293201569298716
2003 -1.061432791850919
2004 -3.8271324164542477
2005 9.066525334434928
2006 -5.301764520605104
2007 -2.6344365499296174
2008 3.6423211675764975
2009 0.5789659264715681
2010 0.41848735730118847
2011 11.425422261292113
2012 8.022743815222725
2013 8.845463764854358
2014 12.021310869292407
2015 1.8649893890024742
2016 -1.584575536085751
2017 -1.405963355836846
2018 24.974036593177715
2019 4.218018217170368
2020 -9.64960432386394
2021 1.1655389381209034